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"This was

May. 1985.

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r

by & uff when Roberts & myse / called upon heim out his study to inquire the requirement of the Exanunation in Geogoopty Buffalo Htet 11th

༤༥

1856

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QUADRATURE OF THE CIRCLE, AND THE
GEOMETRY OF SOLIDS:

TO WHICH ARE ADDED,

ELEMENTS OF PLANE AND SPHERICAL
TRIGONOMETRY.

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BY

JOHN PLAYFAIR, F.R.S. LOND. & EDIN.

PROFESSOR OF NATURAL PHILOSOPHY, FORMERLY OF MATHEMATICS, IN TER
UNIVERSITY OF EDINBURGH.

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